Three-dimensional model online preview method and device
A 3D model and model technology, which is used in 3D modeling, network data browsing optimization, instruments, etc., can solve the problems of long transmission time of large models, unfavorable protection data of 3D models, and failure of 3D data to be loaded into browsers normally. Reduce display performance requirements, reduce data transfer, and improve user experience
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specific Embodiment 1
[0043] Such as figure 1 As shown, the embodiment of the present invention provides an online preview method of a 3D model, including:
[0044] Pre-rendering step S101, locally pre-rendering pictures of multiple perspectives for the 3D model;
[0045] Online preview step S102, responding to the online preview of the 3D model.
[0046] Preferably, the pre-rendering step S101 may specifically be: pre-generate a unit sphere, and divide N*N sampling points along the latitude and longitude direction; scale the unit sphere and sampling points according to the actual model size to obtain the rendering perspective ; Pre-render images from multiple perspectives locally for the 3D model according to the obtained rendering perspective. The rendering perspective obtained by this method is the most sparsely distributed on the equator, and the closer to the poles, the denser it is.
[0047] The embodiment of the present invention does not limit the value of N, preferably, N=72. In practi...
specific Embodiment 2
[0063] like figure 2 As shown, the embodiment of the present invention provides a 3D model online preview device, including:
[0064] The pre-rendering module 201 is used to pre-render pictures of multiple perspectives for the 3D model locally;
[0065] The online preview module 202 is used for responding to the online preview of the 3D model.
[0066] Preferably, the pre-rendering module 201 can be used for:
[0067] Generate a unit sphere in advance, and divide N*N sampling points along the latitude and longitude direction;
[0068] According to the size of the model actually processed, scale the unit sphere and sampling points to obtain the rendering perspective;
[0069] According to the obtained rendering perspective, pre-render pictures of multiple perspectives for the 3D model locally.
[0070] Or, preferably, the pre-rendering module 201 can be used for:
[0071] Generate a unit sphere in advance, and set N equidistantly spaced sampling points in the direction of...
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